.p1{
    text-align: center;
}
img{
    width: 500px;
    height: 400px;
    max-width: 500px;
    max-height: 400px;
   
}
.p2{
    text-align: center;
    color: #ee1a1a;
    font-size: 40px;
    margin-top: 0px;
}
.a1{
    width: 190px;
    border: 1px solid gray;
    background-color: rgb(243, 239, 7);
    border-radius: 5px;
    padding: 5px;
    font-size: 29px;
    margin-left: 350px; 
}
/* 手机端 */
@media screen and (max-width:650px){
    .p1 img {
        width: 300px;
        height: 250px;
        max-width: 300px;
        max-height: 250px;
        text-align: center;
    }
    .a1{
        padding: 10px 20px;
        font-size: 24px;
        display: block;
        width: 100%;
        margin-left: 5px;
        margin-top: 60px;
    }
}
/* 平板端 */